Traffic backed up at the Greville Road area of Auckland's Northern Motorway after a crash on the afternoon of 11 July. Photo: NZTA / Screenshot
Six people have been hospitalised following a multi-vehicle crash in Auckland's Dairy Flat.
The crash, which involved three vehicles, occurred on the Northern Motorway, heading north, shortly after 2pm on Thursday.
Police said of the six injured, four were in a serious condition, one was moderate, and another suffered minor injuries.
"Initial indications suggest there have been critical injuries," police said earlier in the afternoon.
Footage of the scene on social media showed multiple police cars, ambulances, fire trucks and a helicopter.
Photo: Supplied / Google Traffic
Hato Hone St John Ambulance said nine vehicles responded to the accident - five ambulances, two rapid response units and two operations managers.
The road was closed northbound between Oteha Valley Road and Silverdale until about 6pm.
NZTA said motorists could expect northbound delays to ease.
At 6pm, NZTA webcams showed northbound traffic backed up as far as Wairau Valley.
Northern Emergency Services Trust helicopter spokesperson Steve Macmillan said one of his organisation's helicopters was on its way back from taking a patient from the Bay of Islands to Auckland Hospital when it was contacted about the crash.
He said the pilot found a gap in the clouds and landed in a paddock near the motorway.
Two paramedics on board helped with the injured but the helicopter did not take any patients to hospital and had returned to Whangārei, he said.